Which of the following statements is not true of the formation of N-formylmethionyl-tRNAfMet?
A. It is formed in two successive reactions.
B. A formyl group is transferred to methionine before it is added to tRNAfMet.
C. The transformylase enzyme most likely recognizes a unique structural feature of tRNAfMet.
D. The tRNAfMet is charged by the Met-tRNA synthetase.
B
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Why is eating carrots thought to be useful for enhancing vision?
A. High levels of chlorophyll in carrots helps with photosynthesis in the eyes. B. High levels of beta-carotene can lead to the production of a pigment used in vision. C. High levels of carotenoids in carrots can allow vertebrate eyes to perform the dark reactions. D. High levels of NADPH in carrots can allow vertebrate eyes to perform the light reactions.
The undulating membrane of Parabasala is used for ____
a. defensive purposes b. asexual reproduction c. structural support d. food absorption e. movement
The theory of segregation
a. deals with the alleles governing two different traits. b. applies only to linked genes. c. applies only to sex-linked genes. d. explains the behavior of a pair of alleles during meiosis. e. applies only to autosomes.
How is the intron splicing process related to the transport of mRNA from the nucleus to the cytoplasm?
What will be an ideal response?